Extracto r



(No Model.)

J. WHITFIELD.

Stump Extractor.

No. 232,866. Patented Oct. 5,1880.

MFETERS, FHOTO-UTHOGRAFHER. WASNVNGTDN, D C.

UNITED STATES PATENT OEEicE.

STU M P-EXTRACTO R.

SPECIFICATION forming part of Letters Patent N0. 232,866, dated October5,, 1880.

Application filed June 18, 1880. (No model.)

To all whom it may concern Be it known that I. JOHN WHITFIELD, of thecity of Toronto, in the county of York, in the Province ofOntario,Canada, chainmaker, have invented certain new and useful Improvements onStump-Extractin g Machines; and I do hereby declare that the followingis a full, clear, and exact description of the same.

My invention has for its object the further improvement ofstump-extracting machines, and has special reference to the machineswhich are constructed with a substantial tripod -frame in connectionwith certain other machinery suitable for the purpose of raising stumps.

My improvements are as follows: First, an adjustable lever, suspended atits inner end by means of a clevis and link which act as its fulcrum,and at its outer end by means of pul-. leys and chain, partaking in somedegree of the character of the well known mechanic powerviz., the blockand tackle. The stationary pulleys being attached to the apex of thetripod, and the movable pulleys working in an adjustably-movable blockattached to the outer end of the said lever, a stationary pulley is alsoplaced in said leverimmediately behind the movable block referred to.This lever is constructed of two strong bars of flat iron filledpartially in the middle with wood and partly unfilled or hollow. Withinthis hollow space and near to the inner end a takeup bar is operated.This bar is slightly sloping from the perpendicular, leaning outward atthe top. It is notched in each of its two edges, and a pin in the leveraforesaid catches in the notches in the inner edge of the bar, while apin in a clevis suspended from the lever catches in the notches in theouter edge of the bar, so that when the outer end of the lever is raisedby means of the block and tackle it will raise the take-up bar, and witha chain attached to the under end of the take-up bar and to a stump inthe ground the stump will be raised along with the take-up bar, andthis, by successive adjustments and lifts, until the stump is clear ofthe ground. The aforesaid lever with the adjustably-movable block andpulleys and the notched take-up bar, form two of my improvementshereinbefore referred to.

Another of my improvements consists in the manner of connecting thestandards of the tri pod at the top by means of a shackle turning in asocketed plate attached to the inside of the main standard, the shackleholding a circular ring 011 each side for the tops of the two minorstandards of the tripod. The shackle aforesaid is furnished with astrong transverse bolt and cottreh on which two hooked links aresuspended, one of which supports the lever and the other supports thetakeup bar aforesaid. The shackle and rings provide a thoroughlysubstantial fixture for the apex of the tripod.

Another of my improvements is the placing of running wheels on the lowercross-bar of the machine, which connects the two minor standardsthereof, and an improved shoe below the main standard, which is pivotedwith the standard and relieved below, so as to ride easily overinequalities in the ground, having a yoke for attaching the horsesthereto when moving the machine.

In the accompanying drawings the same letters of reference indicate thesame parts as in this specification.

Figure l is a perspective view of a stumpextracting machine having myimprovements attached and shown thereon. The tripod-stand is marked A,of which the main standard is marked a, the minor standards a a, thelower crossbar O, with wheels 0 c, the pivoted shoe b, and yoke b, forattaching the horses thereto in moving the machine. In this figure arealso shown the snatch-blocksff, fixed eye-stud 9, small pulley h, hookedlinks F F, clevis H, and plain link H. This link is shown hooked onto anotch of the take-up bar, which is done for the purpose of holding ontowhat has been obtained by the lift until the lever is again lowered foranother lift. There is also shown lever G, with a movable block, I,pulleys i z, stationary pulley 0, perforations Q, pin N, take up bar M,hooked at both edges, with handchain It, for lifting and lowering thebar M in adjusting for a lift, stump-chain P, and powerchain J Fig.2 isa front view of my improved method of forming the apex of tripod A bymeans of shackle w and rings to 10, showing the top of main standard aand of the minor standards a. a, the eye=plate w", and center-pin p.

It will be observed that the top of the minor standards are reduced andform a shoulder for the rings to rest upon, showing also the ringshacklea; for upper snatch-block.

Fig. 3 is a plan of lever, G, showing my improved adjustable block I,pulleys i i, and stationary pulley 0, wood filling It, and perforationsQ.

Fig. 4: is a plan of cross-bar O and wheels c.

Fig. 5 is a side sectional view of shoe 1), showing the form in which itis cut away below, and of the yoke I), a portion of the wood beingremoved to show the gudgeon-pivot 0 In operating the machine it willbeseen that the pin 8 in clevis s, which is connected with clevis H andnotched or hooked link F, will catch in one or other of the back hooks,m, in take-up bar M, and that the pin N in lever G will catch in one orother of the front hooks, m in bar M, and that when power is applied tothe chain J the outer end of the lever G will be raised thereby, and thetake-up bar M, to which the stump is attached by means of the chain P,will be raised proportionately thereto; and in readjusting the machinefor another lift the link F is hooked into the nearest notch in bar M,which will suspend the bar M while the lever G is being lowered andadjustments are completed for another lift, and this continuously untilthe stump is clear from the ground.

I am aware that stump-extracting machines have been constructed with theold and wellknown tripod A; but I am not aware of such machines havingbeen mounted on wheels on a cross-bar, 0, nor with a pivoted shoe belowthe main standard of the tripod a, nor with a shackle, 10, with rings w'w, socket-plate w", and center-pin 19, nor with an adjustablymovableblock, I, with pulleys t i, in lever G, with clevis 3, nor with atake-up bar, M, hooked on each edge, and links H and F, for holding ontothe stump when a fresh lift is about to be taken.

I claim- 1. In combination, the bar M, having hooks at both its oppositesides or edges, the device 3 s, lever G, with its perforations Q, pin N,movable blocks I, and pulleys i 1, link F, and its clevis H,substantially as and for the purposes described.

2. In combination with the tripod constructed with wheels on two of itslegs and an adjustable shoe on the other leg, the shackle a, rings w w,socket-plate 10, and pin 19, as and for the purposes described.

3. In combination, the take-up bar M, hooked on each edge with links HF, for holding onto the partiallyextracted stump by the bar, the leverG, adjustably-movable block I, chain J, stump-chain P, pulleys 'i 1perforations Q, and pin N, tripod A, shackle w, rings 'ww, socketplateto, pin 1), wheels 0 c, and shoe 1), the

whole operating as and for the purposes set forth.

JOHN YVHITFIELD.

lVitnesses:

Trio. WooDBRIneE, HARRY WELLs.

